Electromagnet.



T. W. MORGAN.

ELECTROMAGNET.

APPLICATION FILED APR. I9, 1915.

Patented Jan. 4, 1916.

Fig. 8.

Fig. J.

Invanto 23 TW Morgan, by /W Affornzy.

UNITED srnrns PATENT OFFICE.

THOMAS MORGAN,

ELEGTROMAGNET.

Specification of Letters Patent.

Patented Jan. 4, 1916.

Application filed April 19, 1915. Serial No. 22,373.

To all whom it may concern Be it known that I, THOMAS W. MORGAN, a citizen of the United States of America, and a resident of Waterloo, Blackhawk county, Iowa, have invented certain new and useful Improvements in Electromagnets, of which the following is a specification.

My inventionrelates to-improvements 1n electro-magnets, and the object of my 1mprovement is to perfect an electro-magnet placed in a battery circuit and to be used in connection with the ignitlon apparatus of an internal-combustion engine, by so modifying the form and arrangement ofthe case of the magnet as to cause the latter to become quickly demagnetized when the circuit 1s d sestablished by reason of the action of said ignition apparatus.

This object I have accomplished by the means which are hereinafter described and claimed,..and which are illustrated in the accompanying drawings, in which:

Figure 1 is a side elevation, full slze, of my improved electro-magnet, seated 1n a casing, the latter being shown in vertlcal central section. Fig. 2 is an elevation of one part' of the divided core with the windlng thereon. Fig. 3 is an upper plan view of my improved electro-magnet with the casing removed. Fig. 4 is a perspective View of one of the parts of the divided core.

Similar numerals of reference denote corresponding parts throughout the several views.

My improved electro-magnet, of which full sized views are given, is especially designed for employment in the battery circuit of the ignition apparatus of 'an internal combustion engine.

The numeral 4 denotes a hollow rectangular spool upon which is placed the winding 5 whose ends are secured in electrical contact with the head of a binding-post 7 supported on bracket arms 6.

The core of the magnet is made up of two like parts 3, which are seated removably in said spool with their abutting ends in con-' tact. The core parts are made of laminated steel, and have oppositely directed outwardly extending and recurved parts 1 which are of such a form that they inclose opposite parts of the winding and are in contact at their abutting extremities. The extremities of the curved parts 1 are pitched at 2 to provide terminal angles as shown. When the core parts are assembled as shown in Fig. i), d lnly the apices of the angles 2 are in con- The electro-magnet is removably but closelyseated within the cup-shaped casing 11 having a non-oonducting lining 12, and adapted to .be closed by a cover 13 provided with a non-conducting lining 14. Said cover has two circular openings to seat the blndlng-screws 7 which pass upwardly therethrough from the bracket 6, and are secured thereto by means of the nuts 8 seated upon conducting washers 9 and insulating washers 10.

'. The special function of the pitched terminals 2 of the core part 1 is to draw together convergingly the lines of force in said core parts, which not only tends to prevent a loss, but especially permits the magnet to become quickly demagnetized when the circuit is disestablished from the battery through the winding 5 by means of the opening of the circuit in the ignition apparatus of the engine. This rapid demagnetization, as is well known in the art, is conducive to better results in the operation of the igniter by creating a stronger spark between the electrodes thereof.

The construction of the core in parts easily assembled or disassembled, is more convenient for repairs.

The electro-magnet, as constructed, is very compact and is convenient for use on the April, 1915.

THOMAS W. MORGAN. Witnesses: I

W. H. BUNN, G. G. KENNEDY. 

